| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a magnetic actuator capable of easily obtaining sufficient power with smaller electric power.SOLUTION: A magnetic actuator 1 includes: a coil member 2 formed by winding an electrically conductive wire 20; and a magnetic member 3 provided along a central axis A of the coil member. The magnetic actuator obtains power by flowing current in the coil member 2 to generate a magnetic field at a place where the magnetic member 3 exists and thereby moving the magnetic member 3. In the coil member 2, the number of turns per unit length of the electrically conductive wire 20 gradually increases from one end 2a toward other end 2b.</p> |
